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Learning Task 3: Solve the given problems. Write your answers in your
1) Two numbers are in the ratio 2:3. If the bigger number is 6, what is
the smaller number?
2) What number compared with 8 is the same as 6 compared with 24?
3) There are 18 red roses for every 6 blue roses. How many red roses are
there if there are 3 blue roses?
4) There are 7 children for every 2 adults in a plaza. How many adults
are there, if there are 21 children?
5) Two numbers are in the ratio 3 : 5. If their difference is 12, what are
the numbers?
heidi
Answers
Given : 1) Two numbers are in the ratio 2:3. the bigger number is 6
2) number compared with 8 is the same as 6 compared with 24?
3) There are 18 red roses for every 6 blue roses.
4) There are 7 children for every 2 adults in a plaza.
5) Two numbers are in the ratio 3 : 5. their difference is 12
To Find : 1) smaller number
2) number
3) How many red roses are there if there are 3 blue roses?
4) How many adults are there, if there are 21 children?
5) what are the numbers?
Solution:
Two numbers are in the ratio 2:3. the bigger number is 6
Smaller number = S
=> 2/3 = S/6
=> S = 2 * 6/ 3
=> S = 4
x/8 = 6/24
=> x/8 = 1/4
=> x = 8/4
=> x = 2
18 red roses for every 6 blue roses.
18/6 = R/3
=> 3 = R/3
=> R = 3 * 3
=> R = 9
Red roses = 9
There are 7 children for every 2 adults in a plaza.
=> 2/7 = A/21
=> A = 2 * 21 /7
=> A = 6
5x - 3x = 12
=> 2x = 12
=> x = 6
5x = 30
3x = 18
30 and 18
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